Windows Azure Zero Downtime Upgrade

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Zero Downtime Upgrade strategies in Windows Azure

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Windows Azure Zero Downtime Upgrade

  1. 1. Zero downtime upgrade Pavlo Revenkov EPAM Cloud Computing Competency Center Email: pavlo_revenkov@epam.com Skype: rp_risingstar
  2. 2. PaaS: Web deploy 2 contoso.cloudapp.net v1.0.1 RDP v1.0.1 v1.0 Web-role #1 Workstation Storage v1.0 Web-role #2 lexcorp.cloudapp.net
  3. 3. Comparison PRO 3 CONTRA - No need to re-deploy instance - Minor changes (patch) - Automatic instance update - Changes lost if instance recycled - Small update size - Support Web-roles only - Visual Studio support - RDP connection required - Virtual machines are not supported
  4. 4. PaaS: VIP-swap 4 Production Instance #1 v1.1 v1.0 contoso.cloudapp.net Instance #2 Workstation Staging Instance #1 v1.1 {guid}.cloudapp.net Instance #2
  5. 5. Comparison PRO 5 CONTRA - DNS swap takes seconds - Virtual machines are not supported - Isolated testing environment - Additional costs for staging - Changes can be reverted easily - Configuration should be identical - Visual Studio support - Web/Worker roles are supported
  6. 6. IaaS: Load Balanced Endpoint 6 80 Instance #1 v1.1 v1.0 v1.1 80 Instance #2 contoso.cloudapp.net Workstation 80 Instance #3 80 Instance #4
  7. 7. Comparison PRO 7 CONTRA - Easy scaling process - Manual upgrade process - Virtual machines support - Additional costs for new instances - No performance degradation - Two versions running the same time - No instances downtime - Configuration cannot be changed - No Visual Studio support
  8. 8. IaaS: Traffic Manager v1.1 8 Instance #1 v1.0 prod.cloudapp.net Instance #2 Workstation contoso.trafficmanager.net Instance #1 v1.1 stage.cloudapp.net Instance #2
  9. 9. Comparison PRO 9 CONTRA - Isolated testing environment - Traffic Manager additional costs - Reconfiguration takes seconds - Additional costs for staging - Virtual machines support - No Visual Studio support - Configuration can be changed - Changes can be reverted easily
  10. 10. Demo 10
  11. 11. References 11 Using Web Deploy in Windows Azure Application:  msdn.microsoft.com/en-us/library/windowsazure/ff683672.aspx How to manage Cloud Services:  windowsazure.com/en-us/documentation/articles/cloud-services-how-to-manage Load balancing virtual machines:  windowsazure.com/en-us/documentation/articles/load-balance-virtual-machines/ Windows Azure Traffic Manager Overview:  msdn.microsoft.com/en-us/library/windowsazure/hh744833.aspx
  12. 12. Questions? 12

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